Open-source Screaming Frog alternatives
Open-source crawlers for website audits, plus Lighthouse for single-page checks.
Published Updated
By Michał Snieżyński, creator of Bisibility.
Quick answer
Use SEOnaut, SiteOne Crawler or LibreCrawl to crawl a site. Use Lighthouse to check one page.
Compare crawl limits and JavaScript support before switching.
Before you switch
Need a whole-site crawl?
Check URL limits, crawl controls and exports.
Does your site need JavaScript?
Check that the crawler can see your rendered content and links.
Compare the results.
Run both crawlers on a small site and compare the issues they find.
Frequently asked questions
Can Lighthouse replace Screaming Frog?
For single-page checks, partly. For a full-site crawl, choose a crawler instead.
Which open-source tools can crawl a whole site?
SEOnaut, SiteOne Crawler and LibreCrawl. Their setup, limits and JavaScript support differ.
Sources and review
Screaming Frog official website. Each linked tool profile contains its reviewed repository revision and license. This guide compares documented tasks; it is not a hands-on feature-parity benchmark.
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